Fix Sphinx warnings.

Doc/library/development.rst

@@ -16,6 +16,7 @@ The list of modules described in this chapter is:
 
 .. toctree::
 
+   typing.rst
    pydoc.rst
    doctest.rst
    unittest.rst

Doc/whatsnew/3.5.rst

@@ -684,7 +684,7 @@ tkinter
 -------
 
 * The :mod:`tkinter._fix` module used for setting up the Tcl/Tk environment
-  on Windows has been replaced by a private function in the :module:`_tkinter`
+  on Windows has been replaced by a private function in the :mod:`_tkinter`
   module which makes no permanent changes to environment variables.
   (Contributed by Zachary Ware in :issue:`20035`.)